Local lymph node assay: 5-bromo-d-deoxyuridine-ELISA method for comparative study in assessing chemical potencies and skin sensitization in BALB/c and CBA/J strains

Toxicology Reports

Sun-Don Kim¹  Seong-Sook Kim²  Hyun-Kul Lee²  Min-Sub Kim²  Si-Whan Song²  Woo-Joo Lee²  Eun-Sung Park²  Jeong-Ja Oh²  Min-Seung Lee²  Bum-Su Pak² 

[1] Corresponding author.;Nonclinical Research Institute, Chemon Inc., 240, Nampyeongro, Yangi-Myeon, Cheoin-Gu, Yongin-Si, Gyeonggi-Do, 17162, Republic of Korea;

关键词: Local lymph node assay;    LLNA:BrdU-ELISA method;    Skin sensitization;    CBA/J;    BALB/c;   

DOI  :  

来源: DOAJ

【 摘 要 】

Local lymph node assay (LLNA) is a predictive in vivo method to provide estimates of relative potency and to contribute to risk assessment/risk management regarding skin sensitizing potency of chemicals and formulations as a stand-alone alternative test. In addition, LLNA is relatively rapid and cost-effective compared to the Buehler method (Guinea pig test), and confers important animal welfare benefits. CBA/J and BALB/c strains are widely commercially available and have been evaluated by formal LLNA validation studies. However, the LLNA method using BrdU with ELISA, unlike other LLNA methods (OECD TG 429, 442 A, 442B), has not been previously validated. Therefore, in this study a validation method was performed to evaluate if the LLNA:BrdU-ELISA method could also be used to identify sensitizers among chemicals listed in OECD TG 429 using CBA/J and BALB/c strains. Here, we newly found that the LLNA:BrdU-ELISA validation method correctly identified 12 of 13 sensitizers in the BALB/c, 11 of 13 sensitizers in the CBA/J, and 3 of 5 non-sensitizers were identified in the two strains. Collectively, we found that the results of LLNA:BrdU-ELISA method provide a similar level of performance for accuracy and sensitivity in two mouse strains BALB/c and CBA/J.

【 授权许可】

Unknown